Box staying machine



Get. 26, 1943. M JUNK|N 2 332,644

BOX STAYING MACHINE Filed Dec. 6, 1941' O o 0 O O O O O O O 43 4Patented Oct. 26, 1943 BOXTAYING MACHINE" H Malcolm P. JunkimgDrexelHill, Pal, assignor T Louis Wolf, Elias Wolf, Howard A. Wolf, and WalterL. Wolf, copartners, doing business as National Metal phia, P a.

Al l lication December 6,

Y n i 5 Claims.

This invention-relates to ,an improvement in box staying, machine andmore; particularlytoa Edge Box Company, Philadeb.

1941, Serial No. 421,913

machine of the type indicated which will efficiently and economicallying strip to boxes. l

As is well known, an efficient type of box is proprepare and applystay-.

ducedfrom a blank formed from cardboard, the

corners of the box being-secured and reinforced by means of metalstaying strips. The metal strips overlie the corners of the box andaresecured to the box walls adjacent to the corners.

,Heretofore it hasbeen customary to prepare the metal staying stripfromha ribbon of metal by punching to form securing spudsand windinginto a roll. Then, to apply the prepared strip, in the production ofboxes, a mechanism include 1 ing an anvil and die is used.

The procedures and, mechanisms heretofore, used in preparing andapplying metal, staying strip are relatively expensive and timeconsuming and present various problems to the manufacturer of theso-called metal stayed-boxes. q

Now in accordance with this invention-there is provided a mechanism forthe preparation and applicationof metal staying strip, which is-at oncerelatively inexpensive to produce, maintain and operate and, at the sametime, of high efiie.

ciency in operation.

Having nowindicated in ture and purpose of this invention, I willproceed to a detailed description of an embodiment thereof withreference to the accompanying drawing in which: 2 V V V Figure 1 is aside view, partly broken away and.

partly in section, of a staying machine according to this invention. V I

Figure 2 is a plan view of a length of staying strip partly prepared forapplication.

a general waythe na- I Figure 3 is a perspective View of an element ofthe strip feeding mechanism included inthe machine showninl igurel.

Figure 4 is a sectional view of an element of the apparatus showing adetail of construction.

Figure 5 is a, fragmentary view showing a corner of the box with stayingstripsuch as indicated inFigu're 2 applied.

In the several figures i indicates a frame for the support of thevarious elements of themachine. At one end of the frame i is formed asupport 2, on which is mounted a die 3, provided with achannel for thepassage and guidance of ametal ribbon 4 extending from a roll 5,.carriedby a bracket 6, extending from the, frame I.;-.Adja-. cent to the-die}and serving, tosupportg the .rib-

bon 4 and guide it into the channel in the die3 is aroller 1 carried bya bracket 8. Above the die 3 is a punch. head 9. carrying a series ofpunches [0, adapted to cooperate'with theidie 3 to form the openings Hin the strip 4, with the production of triangular spuds l2, and toscallop the edges of the stripas shown at I3, Figure 2.

The punch head 9 and punches in are guided by means of guides I4 to theend that the punches in operation will register with the openings in thedie 3.

Mounted on theframeopposite to the die "3 and at a somewhat lower levelis an anvil It with which a hammer l6, mounted forreciprocation 'iinguides I1, is adapted tocooperate for the application of a staying stripto a box. The working face of the hammer I6 in its upper position is inline with channel in the die 3. Leading to the hammer l6, and carriedthereby is a guide I8, which extends toward the die 3 and is adapted toreceive and guide tothe hammer the strip 4, after its passage throughthe die 3 and the formation of the openings l 1 land spuds i2 by thepunches l0. 1 I v The punch head 9 with punches. l 6 and the die I6 areadaptedto be reciprocated by power from a motor I!) transmitted throughgearing, 20 to a shaft 2|, on which is secured acrank 22 connect--- edtoa rod 23. The rod 23 is connected, by a slot and pin connectionv 3!, toan end of. a lever 24, mounted between its ends on a pivot 25 intheframe I. The pivot 25 serves as a fulcrum;

As will now he -obvious, the lever 26 will be I rocked when the motor I9is operated.

The punch head 9 is reciprocated by the lever 24 through a lever 26,mounted on the frame I on a pivot 21 between its ends. The lever His 1connected at one end to an end. of lever ,.24,'

, through a slot and pin connection 32, and at its other end to thepunch head 9 through a link 28. The form of lever 26 and length of link28 are such'that on the worlcing'stroke of the punch head the link 28 isstraightened out, as ina tog- 1 gle,to give maximum pressure on thepunches to.

The hammer is is reciprocated by the lever 24 through a 1everi29 mountedon the frame I on a pivot 30 at its end, and connected to an end oflever 24 through the slot and pin connection 3i. The die I6 is connectedto the lever 29 intermediate its ends by a link 53. i The lever 29 andlink 53 are so arranged that-in the working stroke of the die I6the-link 53 will straighten out, as in a toggle, to give maximumpressure on the die.

It will now be clearthat operation of the motor "19 effects a rocking oflever 24, whichlin turn effects reciprocation of the punch head 9 andthe hammer l6; and that, by virtue of the classes of levers used andtheir connections to the punch head and die, these elements will beoperated to punch the strip 4 and apply it to a box on anvil IS nsynchronism.

The strip 4, led from the rolls 5 over the roller 1, through the channelin the die 3 and. through the guide It to the die [6, is fed to th diefor application to a box by means of a feed pawl 33,

pivotally mounted on an arm 34, mounted on a' shaft 31. The pawl 33 isprovided with a pair of fingers 35 adapted to engage opposite, holes Hin the strip formed by the punches 'ltl, underjthe influence of a spring36.

For feeding a strip the feed pawl 33 is recip-' rocated through themedium of an arm 38 conthe anvil I5. "fed more or less of the punchesmerely pass through previously punched holes in the strip. -F gur e'5illustrates the stay produced by the mechanism above described appliedto the corner 1 of'a box. -In Figure 5, 40 indicates the body of the boxancl'f44 indicates stay about the corner nected to crank 22, anadjustable rod 39 connected to arm 38 and a crank 40 mounted on shaft 37, 20

the cranks 22 and 40 being arranged oppositely.

A holding pawl 4| of thezform of the feed pawl 33 is 'pivotally .mountedin the guide Hi and backed by a spring 42, :is adapted'to engage inoppositeholes 'l l in the strip 4..-

As willnow be obvious, when the shaft 2! is -ro tated by motor IS, thefeed paw1'33 will here 1 ciprocated, its driving connection being suchthat it will move backward idly, when'the punch head 9 and hammer I 6are moved downwardly on their working strokes, and'forward with feed ofst'rip l when the punch head 9 and hammervlii" move upward 'on theidlestrokes. When the feedpawl 33 moves backward, the holding pawl 4Iwill hold the strip 4, but will not obstruct feeding of f the strip whenthe feed pawl advances the strip For adjustment of the feed of the strip4, a

rider strip 43 is placed on the topof the'gdida and is adjustable to andaway from th'efe'edpawl 33. With a given adjustment 'of the rider stripthe feed pawl rides up on 'itin its backward movement and in its forwardmovement engages the strip and feeds it to the 'hammer. i 6. The

length of strip 4 fed' to the hammer H6 'is 'gov erned by the positionof the rider strip 43.

In view of theabovedescripti'on with various 7 description of'itheoperations of the pa'rts of the mechanism described, it isbeli'eve'd'thatfpro cedure involving use of the mechanism for :the" stayingofboxes'will be clear." Howevenassuming that a reel of. metal ribbonissupported from the bracket 6, the ribbon is led over'the rollerl,

through the channel in the diet. and into the guide I8, and drawnout'ofthe throat'adjacent the hammer I6. I c I The mechanism is then putinto-operationby starting the motor l9, which, as' has been described,eiTects operation of-the punch head: and supported punches l0 and of thehammer 1-6. When the punches are operated,"theypunch the holes I l in'the strip 4, with the "formation o'f' the spuds l2 and scalloping oftheedgesof 'the' strip. When the machine is put in operation,*'

the stripis fed along by hand until holes ll have been punched in thestrip for'a'sufiicient length to enable the feed to be taken up ibyithfeed pawl 33. When the 'feedis takenup bythefeed pawl 33, it willoperate .as .described-toiadvance to the die the desiredlength ofpunched strip. As will be understood,"theffeed pawl operates to feedstrip to the hammer [6 when the .liammer -IG is'in motion away from the'anvil'l'5 andv the punch head 9 is in motion awayfromthezharhmer 16.The feed pawl will be idle when punches l0 and hammer iii are operative."Theholding pawl 4| acts, as;has been indicated,;to,= hold 'the,

bination, a frame; a die and'a'n'anvirmounted onintermittently"feedingacontinuous stripover t of the box, the spuds [2 (see Figure 4) being"engaged in the body of the box.

While in the above description of thisappli cation reference has beenmade to metal'strip- I ping, :it will be understood-that the mechanismin I accordancevi'rith thisinvention inayi be -used'fob the preparationand application of =staying s of'otherma'teria'l suitable'for thepurpose} It is not contemplatedthat thisdnvention"shall be limited bythe above -detailed;description of the embodiment thereof,sincevarioiis'mo'diflc'aj tions in detail maybe made without" departing?from-"the scope of the claims appendedhe'ret'o.

WhatI claim and'desireto protect'iby 'lietters Patent 'isz a .1. A boxstaying machine comprising, i combination, a frame, "a die and-=ari*;anvil" mounted on the frame, a series-of punchesY-f mounted on ahead and 'adapted tof cooperate with the die, a'ham'r'ner adaptedto"c'o'oper ate wit the anvil, means for intermittently feeding facontinuous strip over the die-anaanvnahd driv ing means inc'ludinga'leverfulcrumed betwee .its endsand means fo'r operabIy corinectingslever to said head and tofsaid hammer resp tively' for efiectingreciprocation orsaidser f of: Y

punches and-said hammer in'synchron'ism 2. A box staying machinecomprising, in com-' the frame, a 'series of punches {mounted on headand adapted tocooperate with the hammer adapted to cooperate'-with-'theanv1l;"

means for intermittently feeding'a strip overthe die and'anvil anddriving mean [j including a lever fulcrum'ed between "its ends *and 1meansconnected to said-lever on opposite sides off said fulcrum forconnecting said lever to sald" head and said hammer respectively 'foreffe reciprocation of 'saidseries of punches-and hammer in synchronism,saidseries of p maximum intermittent feedth ereof. I V Z 3. A boxstaying machine comprisingfin com extending over a length of stripequal. v

bination, a frame, a die and-'an ja'nvil'mountedion theframe, a seriesof punchesmounted'on ahead and adapted to cooperate with the die; ahanm'er;

adapted to cooperate with the {anvilfmeans for die and anvil anddriving' mean's for eirecting fr ciprocation of saidseries ofpunches'-'ani? said"i hammer in synchronism, comprising' a' leve rcrumed between its ends, 'afpair 0f *levers if crumed on the frame andrespectively connected".

to. opposite ends of-said first mentioned-leverfand links connectingthelevers of -sz'i'id pair tdsaid head and tosaidhammer'respectivelywhereby 5 saidheadand the punches inounted thereon w7 beactuated insynchro'nism. 3 l 4; -A box- =staying machine-compris'ingm ee' bination, a frame, a die and an anvil mounted on the frame, aseries of punches mounted on a head and adapted to cooperate with thedie, a hammer adapted to cooperate with the anvil, means forintermittently feeding a continuous strip over the die and anvil,driving means for effecting reciprocation of said series of punches andsaid hammer in synchronism, comprising a lever fulcrumeol between itsends, a pair of levers fulcrumed on the frame and respectively connectedto opposite ends of said first mentioned lever through slot and pinconnections, and links con-- meeting the levers of said pairrespectively to said head and to said hammer whereby said head and thepunches mounted thereon will be actuated in synchronism.

5. A box staying machine comprising, in combination, a frame, a die andan anvil mounted on the frame, a series of punches mounted on a head andadapted to cooperate with the die, a hammer adapted to cooperate withthe anvil,

means for intermittently feeding a continuous strip over the die andanvil, driving means for effecting reciprocation of said series ofpunches and said hammer in synchronism, comprising a lever fulcrumedbetween its ends and a pair of levers and respectively connected toopposite ends of said first mentioned lever through slot and pinconnections, one of the levers of said pair being fulcrumed at one endon the frame and the other being fulcrumed between its ends on theframe, and links connecting the levers of said pair respectively to saidhead and to said hammer whereby said head and the punches mountedthereon will be actuated in synchronism.

MALCOLM P. J UNKIN

